Company lists · Data refreshed September 2026
Top 22 Data breach protection companies based in New York, United States
RevenueBase identified 97 data breach protection companies headquartered in New York, United States as of September 2026 and tracks 1,284 professional contacts across them, including 351 with verified work emails. New York is the largest hub.
This list covers data breach protection companies headquartered in New York, United States, matched on what each company actually does as described in its own words. Ranked by team size, largest first. Every row shows the company's own description, its RevenueBase Smart Search rating, and when it was last checked. Data refreshed September 19, 2026.
Published by RevenueBase, a B2B data infrastructure company. This list was built with RevenueBase Smart Search, the natural-language company search RevenueBase customers use to build their own targeted lists and unlock verified emails and direct dials at the companies on them. How these lists are built and judged.
The 22 largest data breach protection companies based in New York, United States
Ranked by team size| # | Company | Contacts | |||
|---|---|---|---|---|---|
| 1 | 200 contacts → | ||||
Partial evidence “Agio is a hybrid cybersecurity and managed IT organization that combines predictive intelligence with human brilliance to empower clients with next-generation cyber protection and…” Source: RevenueBase Database · checked Sep 19, 2026Thanks. The Data Team will review it. | |||||
| 2 | 163 contacts → | ||||
Indirect evidence “Harbor IT helps organizations secure, operate, and scale through integrated IT, cybersecurity, AI, and cloud services.” Source: RevenueBase Database · checked Sep 19, 2026Thanks. The Data Team will review it. | |||||
| 3 | 76 contacts → | ||||
Indirect evidence “NopalCyber makes cybersecurity manageable, affordable, reliable, and powerful for companies that need to be resilient and compliant.” Source: RevenueBase Database · checked Sep 19, 2026Thanks. The Data Team will review it. | |||||
| 4 | 66 contacts → | ||||
Indirect evidence Source: RevenueBase Database · checked Sep 19, 2026Thanks. The Data Team will review it. | |||||
| 5 | 58 contacts → | ||||
Indirect evidence “Altourage is a New York City-based managed IT and cybersecurity provider built for organizations that operate in high-stakes, fast-moving environments.” Source: RevenueBase Database · checked Sep 19, 2026Thanks. The Data Team will review it. | |||||
| 6 | 55 contacts → | ||||
Indirect evidence “Port53 Technologies is The Global Leader in Cisco-Based Managed Security Operations, helping organizations modernize and secure their digital environments through advanced…” Source: RevenueBase Database · checked Sep 19, 2026Thanks. The Data Team will review it. | |||||
| 7 | 38 contacts → | ||||
Partial evidence “Founded in 2011, Proven Data has consistently evolved to meet the growing needs of our clients.” Source: RevenueBase Database · checked Sep 19, 2026Thanks. The Data Team will review it. | |||||
| 8 | 28 contacts → | ||||
Indirect evidence “CipherTechs is now part of CyberMaxx, a tech-enabled cybersecurity service provider.” Source: RevenueBase Database · checked Sep 19, 2026Thanks. The Data Team will review it. | |||||
| 9 | 19 contacts → | ||||
Indirect evidence “ACA Aponix, a division of ACA Group, provides cybersecurity and technology risk assessments, vendor and M&A diligence services, network testing, and advisory services.” Source: RevenueBase Database · checked Sep 19, 2026Thanks. The Data Team will review it. | |||||
| 10 | 17 contacts → | ||||
Indirect evidence “Cohere offers managed security and IT infrastructure services all under one roof.” Source: RevenueBase Database · checked Sep 19, 2026Thanks. The Data Team will review it. | |||||
| 11 | 16 contacts → | ||||
Indirect evidence “LIFARS, a SecurityScorecard Company is a global leader in Incident Response, Digital Forensics, Ransomware Mitigation, and Cyber Resiliency services.” Source: RevenueBase Database · checked Sep 19, 2026Thanks. The Data Team will review it. | |||||
| 12 | 12 contacts → | ||||
Indirect evidence “We’re the nemesis of evil hackers attempting to take control of your system so they can extort money.” Source: RevenueBase Database · checked Sep 19, 2026Thanks. The Data Team will review it. | |||||
| 13 | 12 contacts → | ||||
Partial evidence “At Silent Breach, we think like a hacker and defend like a pro.” Source: RevenueBase Database · checked Sep 19, 2026Thanks. The Data Team will review it. | |||||
| 14 | 9 contacts → | ||||
Indirect evidence “Our primary business is the digital security of your assets.” Source: RevenueBase Database · checked Sep 19, 2026Thanks. The Data Team will review it. | |||||
| 15 | 9 contacts → | ||||
Partial evidence “Resonance Security offers full spectrum cybersecurity aggregation software for institutions and individuals that makes protecting against any cybersecurity threat effortless no…” Source: RevenueBase Database · checked Sep 19, 2026Thanks. The Data Team will review it. | |||||
| 16 | 8 contacts → | ||||
Indirect evidence “PROTELI is a trusted IT and cybersecurity partner that delivers proactive, managed IT solutions to small and mid-sized businesses and startups in NYC and beyond.” Source: RevenueBase Database · checked Sep 19, 2026Thanks. The Data Team will review it. | |||||
| 17 | 8 contacts → | ||||
Indirect evidence “Sayfer, where people and technology meet to overcome web3 and blockchain challenges.” Source: RevenueBase Database · checked Sep 19, 2026Thanks. The Data Team will review it. | |||||
| 18 | 8 contacts → | ||||
Indirect evidence “HolistiCyber’s mission is to assist corporations in defending themselves from the new phase of evolution in Cyber threats - not only in volume, but in the level of sophistication.” Source: RevenueBase Database · checked Sep 19, 2026Thanks. The Data Team will review it. | |||||
| 19 | 6 contacts → | ||||
Indirect evidence “Your technology should scale with you.” Source: RevenueBase Database · checked Sep 19, 2026Thanks. The Data Team will review it. | |||||
| 20 | 5 contacts → | ||||
Indirect evidence “Kopidion consists of highly qualified cyber operations and information security professionals.” Source: RevenueBase Database · checked Sep 19, 2026Thanks. The Data Team will review it. | |||||
| 21 | 4 contacts → | ||||
Indirect evidence “ParanoidLab is a Cyber Threat Intelligence service designed for MSSPs, SOCs, and IT Security providers focused on expanding their security services and boosting revenue.” Source: RevenueBase Database · checked Sep 19, 2026Thanks. The Data Team will review it. | |||||
| 22 | 4 contacts → | ||||
Indirect evidence “Velstadt is a cybersecurity provider focused on delivering both offensive and defensive security services.” Source: RevenueBase Database · checked Sep 19, 2026Thanks. The Data Team will review it. | |||||
RevenueBase Smart Search
RevenueBase Smart Search assesses information from a company’s LinkedIn profile, information supplied directly by the company, its website, and other publicly available sources. It uses that information to rate how closely the company relates to this list’s category: data breach protection companies. Every row carries its rating and the description the rating was read from, so each one can be checked rather than taken on trust.
- Strong evidence
- The company's own public description of its business names data breach protection companies.
- Partial evidence
- Its own public description names part of data breach protection companies, so it works in or next to the category without describing itself that way.
- Indirect evidence
- The description shown does not name data breach protection companies. The match rests on the rest of the company's public profile rather than the one sentence quoted here, so this is the rating to check first.
RevenueBase Smart Search is how these lists are built: RevenueBase's data engine and AI assemble the companies that match a category defined in a user's own words, so a list can be about what companies actually do rather than about whichever industry code they were filed under.
Showing 22 of 97 data breach protection companies based in New York, United States
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Data breach protection companies based in New York, United States at a glance
As of Sep 19, 2026Companies by employee count
Email recency for this list is measured across the whole United States list rather than for New York, so it is reported there. Company counts and contact totals on this page are exact for New York, over 97 companies.
How this list was built
Company categories are rarely black and white. RevenueBase reads each company's own description of its business to decide whether it belongs among data breach protection companies, so some rows will be adjacent to the category rather than pure plays. The description and RevenueBase Smart Search rating on every row are there so you can check each match yourself.
- Source
- The RevenueBase company graph: 60 million companies and 398.9 million professional contacts resolved from primary sources, queried with RevenueBase Smart Search, the natural-language company search available to every RevenueBase user.
- What qualifies
- Companies headquartered in New York, United States whose own description of what they do matches “data breach protection companies”. Matching reads each company's description, not its industry code or its name.
- RevenueBase Smart Search
- RevenueBase Smart Search is how this list is assembled and how each row is rated. RevenueBase's data engine and AI assess a company's LinkedIn profile, information supplied directly by the company, its website and other publicly available information, then relate it to a category defined in a user's own words. Each row is rated strong evidence (its own description names data breach protection companies), partial evidence (it names part of the category) or indirect evidence (the description shown names none of it and the match rests on the rest of the company's profile). The description supporting each rating is quoted on the row.
- What we exclude
- Companies whose own description does not clearly place them among data breach protection companies, and records with no verified work email. Companies headquartered outside New York are excluded even when they keep an office there.
- Match quality
- In blind human judging of this matching method, 86% of matched companies were on target. Expect roughly 1 in 7 rows to be adjacent to the category rather than a pure play. Every row shows the company's own description and its RevenueBase Smart Search rating so you can judge each match yourself. Read the full methodology: how the lists are built, how the judging worked, and what the figure means.
- Ranking
- Team size, largest first: companies are ordered by the number of professionals RevenueBase tracks at each one. Employee ranges shown are reported bands, for context.
- Verification
- Every listed company carries at least one verified work email, 351 across the full list. Contacts re-verify on a rolling cadence, and each contact's own verification date is shown inside RevenueBase.
- Refresh
- This page's figures were pulled from the company graph on September 19, 2026. Lists refresh periodically as the graph is re-checked.
- Corrections
- Wrong category, wrong headquarters, or a company that has closed? Use “Report an issue” on any row. Reports go to the RevenueBase Data Team and feed back into the company graph.
Data breach protection companies by metro in the United States
- Data breach protection companies in New York97
- Data breach protection companies in Atlanta64
- Data breach protection companies in Austin60
- Data breach protection companies in Houston60
- Data breach protection companies in Miami60
- Data breach protection companies in Washington58
- Data breach protection companies in Chicago57
- Data breach protection companies in Dallas52
- Data breach protection companies in Tampa50
- Data breach protection companies in San Francisco43
- Data breach protection companies in Columbia39
- Data breach protection companies in Los Angeles39
- Data breach protection companies in San Diego34
- Data breach protection companies in Charlotte33
- Data breach protection companies in Las Vegas33
- Data breach protection companies in Orlando32
- Data breach protection companies in Arlington31
- Data breach protection companies in Boston31
- Data breach protection companies in Denver28
- Data breach protection companies in San Antonio27
- Data breach protection companies in Sheridan27
- Data breach protection companies in Reston26
- Data breach protection companies in Phoenix25
Frequently asked
What is RevenueBase Smart Search?
RevenueBase Smart Search is how RevenueBase decides which companies belong on this list and how strongly each one fits. Its data engine and AI assess a company's LinkedIn profile, information supplied directly by the company, its website and other publicly available information, then relate it to the category the list is about. Each row is rated strong evidence when the company's own description names data breach protection companies, partial evidence when it names part of the category, and indirect evidence when the description shown names none of it and the match rests on the rest of the company's profile.
How many data breach protection companies are there based in New York, United States?
RevenueBase identified 97 data breach protection companies headquartered in New York, United States as of September 2026, matched on each company's own description of what it does rather than its industry code.
What is the largest company on this list?
AGIO, headquartered in New York, tops this list with the largest team on record.
Which city has the most data breach protection companies?
New York leads with 97 headquartered companies, followed by Atlanta (64) and Austin (60).
How do I get contact information for these companies?
A free RevenueBase account lets you run this exact search and work the top results, verified emails and direct dials included. Upgrading unlocks all 351 verified decision-maker contacts tracked across these 97 companies.
How current is this list?
The list refreshes periodically as the company graph is re-checked. This page's figures were pulled on September 19, 2026.
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About this data
RevenueBase is a B2B data infrastructure company. Its company graph covers 60 million companies and 398.9 million professional contacts, with emails verified on a rolling cadence rather than scraped once and left to decay. These company lists are generated directly from that graph with RevenueBase Smart Search, the same natural-language company search every RevenueBase user has: describe a market in plain words, get the companies that match, and add verified emails and direct dials for the people at them. It is the same data that powers RevenueBase's B2B data products, and a free account includes 500 credits to start. How these lists are built and judged.
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